Parametric Shadow Control for Portrait Generation in Text-to-Image Diffusion Models

Haoming Cai¹, Tsung-Wei Huang², Shiv Gehlot², Brandon Y. Feng³, Sachin Shah¹, Guan-Ming Su², Christopher Metzler¹

¹University of Maryland ²Dolby Labs, ³MIT,

Shadow Director enables parametric shadow control over strength, placement, shape, and directional lighting in generated portraits.

Neural Gaffer Example

Directional Light Position - Left Light

Neural Gaffer Example

Directional Light Position - From Left to Right

Neural Gaffer Example

Shadow Strength

Neural Gaffer Example

Shadow Placement and Shape

Neural Gaffer Example